Looks like Paradigm have changed everything in all their new Ref range. The last ones re-used drivers from the previous generation. They still Still sounded great, though, and perhaps Paradigms regular speakers get overlooked becuse of the (deserved) rep the Servo has. Paradigm's surround speakers in particular are brilliant and these new ones look great.
I miss my old Paradigm Ref speakers and by the looks of the new range, I would certainly audition the whole lot with interest.
11Hz +/-3db! That is low for any sub.
You're right; that centre is enormous - 953mm wide! Bet it sounds good, though...